ATAN( ) Function
Returns in radians the arc tangent of a numeric expression.
ATAN(nExpression)
Return Value
Numeric
Parameters
- nExpression
Specifies a numeric expression whose arc tangent ATAN( ) returns. nExpression can be any value. The value returned by ATAN( ) can range from –pi/2 through +pi/2 (–1.57079 to 1.57079). The number of decimal places displayed in the value returned by ATAN( ) is determined by SET DECIMALS.
Remarks
Use RTOD( ) to convert radians to degrees.
Example
CLEAR
? ATAN(0) && Displays 0.00
STORE PI( )/2 to gnAngle
? ATAN(gnAngle) && Displays 1.00
? ATAN(PI( )/2) && Displays 1.00
? ATAN(DTOR(90)) && Displays 1.00